/* Provides a simple example of using a date_generator, and simple
* mathematical operatorations, to calculate the days since
* New Years day of this year, and days until next New Years day.
*
* Expected results:
* Adding together both durations will produce 366 (365 in a leap year).
*/
#include <iostream>
#include "boost/date_time/gregorian/gregorian.hpp"
int
main()
{
	using namespace boost::gregorian;
	date today = day_clock::local_day();
	partial_date new_years_day(1,Jan);
	//Subtract two dates to get a duration
	days days_since_year_start = today - new_years_day.get_date(today.year());
	std::cout << "Days since Jan 1: " << days_since_year_start.days()
	<< std::endl;
	days days_until_year_start = new_years_day.get_date(today.year()+1) - today;
	std::cout << "Days until next Jan 1: " << days_until_year_start.days()
	<< std::endl;
	return 0;
};